JDBC 插入、修改 Oracle Lob字段

String DRIVER = "oracle.jdbc.driver.OracleDriver"; 
    /**
     * ORACLE连接用URL
     */
    private static final String URL = "jdbc:oracle:thin:@test2000:1521:orac";

    /**
     * 用户名
     */
    private static final String USER = "user";

    /**
     * 密码
     */
    private static final String PASSWORD = "pswd";

    /**
     * 数据库连接
     */
    private static Connection conn = null;

    /**
     * SQL语句对象
     */
    private static Statement stmt = null;

    /**
     * @roseuid 3EDA089E02BC
     */
    public LobPros()
    {

    }

    /**
     * 往数据库中插入一个新的CLOB对象
     *
     * @param infile - 数据文件
     * @throws java.lang.Exception
     * @roseuid 3EDA04A902BC
     */
    public static void clobInsert(String infile) throws Exception
    {
        /* 设定不自动提交 */
        boolean defaultCommit = conn.getAutoCommit();
        conn.setAutoCommit(false);

        try {
            /* 插入一个空的CLOB对象 */
            stmt.executeUpdate("INSERT INTO TEST_CLOB VALUES ('111', EMPTY_CLOB())");
            /* 查询此CLOB对象并锁定 */
            ResultSet rs = stmt.executeQuery("SELECT CLOBCOL FROM TEST_CLOB WHERE ID='111' FOR UPDATE");
            while (rs.next()) {
                /* 取出此CLOB对象 */
                oracle.sql.CLOB clob = (oracle.sql.CLOB)rs.getClob("CLOBCOL");
                /* 向CLOB对象中写入数据 */
                BufferedWriter out = new BufferedWriter(clob.getCharacterOutputStream());
                BufferedReader in = new BufferedReader(new FileReader(infile));
                int c;
                while ((c=in.read())!=-1) {
                    out.write(c);
                }
                in.close();
                out.close();
            }
            /* 正式提交 */
            conn.commit();
        } catch (Exception ex) {
            /* 出错回滚 */
            conn.rollback();
            throw ex;
        }

        /* 恢复原提交状态 */
        conn.setAutoCommit(defaultCommit);
    }

    /**
     * 修改CLOB对象（是在原CLOB对象基础上进行覆盖式的修改）
     *
     * @param infile - 数据文件
     * @throws java.lang.Exception
     * @roseuid 3EDA04B60367
     */
    public static void clobModify(String infile) throws Exception
    {
        /* 设定不自动提交 */
        boolean defaultCommit = conn.getAutoCommit();
        conn.setAutoCommit(false);

        try {
            /* 查询CLOB对象并锁定 */
            ResultSet rs = stmt.executeQuery("SELECT CLOBCOL FROM TEST_CLOB WHERE ID='111' FOR UPDATE");
            while (rs.next()) {
                /* 获取此CLOB对象 */
                oracle.sql.CLOB clob = (oracle.sql.CLOB)rs.getClob("CLOBCOL");
                /* 进行覆盖式修改 */
                BufferedWriter out = new BufferedWriter(clob.getCharacterOutputStream());
                BufferedReader in = new BufferedReader(new FileReader(infile));
                int c;
                while ((c=in.read())!=-1) {
                    out.write(c);
                }
                in.close();
                out.close();
            }
            /* 正式提交 */
            conn.commit();
        } catch (Exception ex) {
            /* 出错回滚 */
            conn.rollback();
            throw ex;
        }

        /* 恢复原提交状态 */
        conn.setAutoCommit(defaultCommit);
    }

    /**
     * 替换CLOB对象（将原CLOB对象清除，换成一个全新的CLOB对象）
     *
     * @param infile - 数据文件
     * @throws java.lang.Exception
     * @roseuid 3EDA04BF01E1
     */
    public static void clobReplace(String infile) throws Exception
    {
        /* 设定不自动提交 */
        boolean defaultCommit = conn.getAutoCommit();
        conn.setAutoCommit(false);

        try {
            /* 清空原CLOB对象 */
            stmt.executeUpdate("UPDATE TEST_CLOB SET CLOBCOL=EMPTY_CLOB() WHERE ID='111'");
            /* 查询CLOB对象并锁定 */
            ResultSet rs = stmt.executeQuery("SELECT CLOBCOL FROM TEST_CLOB WHERE ID='111' FOR UPDATE");
            while (rs.next()) {
                /* 获取此CLOB对象 */
                oracle.sql.CLOB clob = (oracle.sql.CLOB)rs.getClob("CLOBCOL");
                /* 更新数据 */
                BufferedWriter out = new BufferedWriter(clob.getCharacterOutputStream());
                BufferedReader in = new BufferedReader(new FileReader(infile));
                int c;
                while ((c=in.read())!=-1) {
                    out.write(c);
                }
                in.close();
                out.close();
            }
            /* 正式提交 */
            conn.commit();
        } catch (Exception ex) {
            /* 出错回滚 */
            conn.rollback();
            throw ex;
        }

        /* 恢复原提交状态 */
        conn.setAutoCommit(defaultCommit);
    }

    /**
     * CLOB对象读取
     *
     * @param outfile - 输出文件名
     * @throws java.lang.Exception
     * @roseuid 3EDA04D80116
     */
    public static void clobRead(String outfile) throws Exception
    {
        /* 设定不自动提交 */
        boolean defaultCommit = conn.getAutoCommit();
        conn.setAutoCommit(false);

        try {
            /* 查询CLOB对象 */
            ResultSet rs = stmt.executeQuery("SELECT * FROM TEST_CLOB WHERE ID='111'");
            while (rs.next()) {
                /* 获取CLOB对象 */
                oracle.sql.CLOB clob = (oracle.sql.CLOB)rs.getClob("CLOBCOL");
                /* 以字符形式输出 */
                BufferedReader in = new BufferedReader(clob.getCharacterStream());
                BufferedWriter out = new BufferedWriter(new FileWriter(outfile));
                int c;
                while ((c=in.read())!=-1) {
                    out.write(c);
                }
                out.close();
                in.close();
            }
        } catch (Exception ex) {
            conn.rollback();
            throw ex;
        }

        /* 恢复原提交状态 */
        conn.setAutoCommit(defaultCommit);
    }

    /**
     * 向数据库中插入一个新的BLOB对象
     *
     * @param infile - 数据文件
     * @throws java.lang.Exception
     * @roseuid 3EDA04E300F6
     */
    public static void blobInsert(String infile) throws Exception
    {
        /* 设定不自动提交 */
        boolean defaultCommit = conn.getAutoCommit();
        conn.setAutoCommit(false);

        try {
            /* 插入一个空的BLOB对象 */
            stmt.executeUpdate("INSERT INTO TEST_BLOB VALUES ('222', EMPTY_BLOB())");
            /* 查询此BLOB对象并锁定 */
            ResultSet rs = stmt.executeQuery("SELECT BLOBCOL FROM TEST_BLOB WHERE ID='222' FOR UPDATE");
            while (rs.next()) {
                /* 取出此BLOB对象 */
                oracle.sql.BLOB blob = (oracle.sql.BLOB)rs.getBlob("BLOBCOL");
                /* 向BLOB对象中写入数据 */
                BufferedOutputStream out = new BufferedOutputStream(blob.getBinaryOutputStream());
                BufferedInputStream in = new BufferedInputStream(new FileInputStream(infile));
                int c;
                while ((c=in.read())!=-1) {
                    out.write(c);
                }
                in.close();
                out.close();
            }
            /* 正式提交 */
            conn.commit();
        } catch (Exception ex) {
            /* 出错回滚 */
            conn.rollback();
            throw ex;
        }

        /* 恢复原提交状态 */
        conn.setAutoCommit(defaultCommit);
    }

    /**
     * 修改BLOB对象（是在原BLOB对象基础上进行覆盖式的修改）
     *
     * @param infile - 数据文件
     * @throws java.lang.Exception
     * @roseuid 3EDA04E90106
     */
    public static void blobModify(String infile) throws Exception
    {
        /* 设定不自动提交 */
        boolean defaultCommit = conn.getAutoCommit();
        conn.setAutoCommit(false);

        try {
            /* 查询BLOB对象并锁定 */
            ResultSet rs = stmt.executeQuery("SELECT BLOBCOL FROM TEST_BLOB WHERE ID='222' FOR UPDATE");
            while (rs.next()) {
                /* 取出此BLOB对象 */
                oracle.sql.BLOB blob = (oracle.sql.BLOB)rs.getBlob("BLOBCOL");
                /* 向BLOB对象中写入数据 */
                BufferedOutputStream out = new BufferedOutputStream(blob.getBinaryOutputStream());
                BufferedInputStream in = new BufferedInputStream(new FileInputStream(infile));
                int c;
                while ((c=in.read())!=-1) {
                    out.write(c);
                }
                in.close();
                out.close();
            }
            /* 正式提交 */
            conn.commit();
        } catch (Exception ex) {
            /* 出错回滚 */
            conn.rollback();
            throw ex;
        }

        /* 恢复原提交状态 */
        conn.setAutoCommit(defaultCommit);
    }

    /**
     * 替换BLOB对象（将原BLOB对象清除，换成一个全新的BLOB对象）
     *
     * @param infile - 数据文件
     * @throws java.lang.Exception
     * @roseuid 3EDA0505000C
     */
    public static void blobReplace(String infile) throws Exception
    {
        /* 设定不自动提交 */
        boolean defaultCommit = conn.getAutoCommit();
        conn.setAutoCommit(false);

        try {
            /* 清空原BLOB对象 */
            stmt.executeUpdate("UPDATE TEST_BLOB SET BLOBCOL=EMPTY_BLOB() WHERE ID='222'");
            /* 查询此BLOB对象并锁定 */
            ResultSet rs = stmt.executeQuery("SELECT BLOBCOL FROM TEST_BLOB WHERE ID='222' FOR UPDATE");
            while (rs.next()) {
                /* 取出此BLOB对象 */
                oracle.sql.BLOB blob = (oracle.sql.BLOB)rs.getBlob("BLOBCOL");
                /* 向BLOB对象中写入数据 */
                BufferedOutputStream out = new BufferedOutputStream(blob.getBinaryOutputStream());
                BufferedInputStream in = new BufferedInputStream(new FileInputStream(infile));
                int c;
                while ((c=in.read())!=-1) {
                    out.write(c);
                }
                in.close();
                out.close();
            }
            /* 正式提交 */
            conn.commit();
        } catch (Exception ex) {
            /* 出错回滚 */
            conn.rollback();
            throw ex;
        }

        /* 恢复原提交状态 */
        conn.setAutoCommit(defaultCommit);
    }

    /**
     * BLOB对象读取
     *
     * @param outfile - 输出文件名
     * @throws java.lang.Exception
     * @roseuid 3EDA050B003B
     */
    public static void blobRead(String outfile) throws Exception
    {
        /* 设定不自动提交 */
        boolean defaultCommit = conn.getAutoCommit();
        conn.setAutoCommit(false);

        try {
            /* 查询BLOB对象 */
            ResultSet rs = stmt.executeQuery("SELECT BLOBCOL FROM TEST_BLOB WHERE ID='222'");
            while (rs.next()) {
                /* 取出此BLOB对象 */
                oracle.sql.BLOB blob = (oracle.sql.BLOB)rs.getBlob("BLOBCOL");
                /* 以二进制形式输出 */
                BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(outfile));
                BufferedInputStream in = new BufferedInputStream(blob.getBinaryStream());
                int c;
                while ((c=in.read())!=-1) {
                    out.write(c);
                }
                in.close();
                out.close();
            }
            /* 正式提交 */
            conn.commit();
        } catch (Exception ex) {
            /* 出错回滚 */
            conn.rollback();
            throw ex;
        }

        /* 恢复原提交状态 */
        conn.setAutoCommit(defaultCommit);
    }

    /**
     * 建立测试用表格
     * @throws Exception
     */
    public static void createTables() throws Exception {
        try {
            stmt.executeUpdate("CREATE TABLE TEST_CLOB ( ID NUMBER(3), CLOBCOL CLOB)");
            stmt.executeUpdate("CREATE TABLE TEST_BLOB ( ID NUMBER(3), BLOBCOL BLOB)");
        } catch (Exception ex) {

        }
    }

    /**
     * @param args - 命令行参数
     * @throws java.lang.Exception
     * @roseuid 3EDA052002AC
     */
    public static void main(String[] args) throws Exception
    {
        /* 装载驱动,建立数据库连接 */
        Class.forName(DRIVER);
        conn = DriverManager.getConnection(URL,USER,PASSWORD);
        stmt = conn.createStatement();

        /* 建立测试表格 */
        createTables();

        /* CLOB对象插入测试 */
        clobInsert("c:/clobInsert.txt");
        clobRead("c:/clobInsert.out");

        /* CLOB对象修改测试 */
        clobModify("c:/clobModify.txt");
        clobRead("c:/clobModify.out");

        /* CLOB对象替换测试 */
        clobReplace("c:/clobReplace.txt");
        clobRead("c:/clobReplace.out");

        /* BLOB对象插入测试 */
        blobInsert("c:/blobInsert.doc");
        blobRead("c:/blobInsert.out");

        /* BLOB对象修改测试 */
        blobModify("c:/blobModify.doc");
        blobRead("c:/blobModify.out");

        /* BLOB对象替换测试 */
        blobReplace("c:/blobReplace.doc");
        blobRead("c:/bolbReplace.out");

        /* 关闭资源退出 */
        conn.close();
        System.exit(0);
    }
}

 

package com.copybzzh.test;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Date;

import easy.sql.EasySQL;
import easy.sql.Session;
import easy.sql.SessionFactory;
import easy.sql.io.TextFileWriter;

public class CopyBzzh {
    //根据数据库名查询对应表

    public static void main(String[] args) {
        
        File folderfiles = new File("d:" + File.separator + "images");//文件夹路径
        File[] files = folderfiles.listFiles(); //获取所有文件
        Session session = null;
        PreparedStatement pst = null;
        PreparedStatement pst2 = null;
        java.sql.Statement stmt=null;
        try {
            session = SessionFactory.openSession(EasySQL.ORACLE, "jdbc:oracle:thin:@192.168.1.199:1521:oradb", "data", "data", false, EasySQL.ORACLE_DRIVER);

            boolean defaultCommit = session.getConnection().getAutoCommit();
            session.getConnection().setAutoCommit(false);

            String str = "PhotoName                  State";
            File file = new File(new Date().getTime() + ".txt"); //插入日志
            
            for (int i = 0; i < files.length; i++) { //循环遍历 文件夹下面图片
                
                String sfzh = files[i].getName().substring(0, files[i].getName().indexOf(".")); //获取文件名
                
                FileInputStream fis = new FileInputStream(files[i]);
                
                stmt = session.getConnection().createStatement();
                
                ResultSet rs = stmt.executeQuery("select zp from person2 where sfzh='" + sfzh + "' for update");//锁定选择文件
                
                System.out.println(files[i].getName()+"==开始");
                
                if (rs.next()) {
                    /* 获取blob字段 */
                    oracle.sql.BLOB blob = (oracle.sql.BLOB) rs.getBlob("zp");
                    
                    /* 向BLOB对象中写入数据 */
                    BufferedOutputStream out = new BufferedOutputStream(blob.getBinaryOutputStream());
                    
                    BufferedInputStream in = new BufferedInputStream(fis);
                    int c1;
                    while ((c1 = in.read()) != -1) {
                        out.write(c1);
                    }
                    
                    /* 是否插入成功 */
                    str += "\r\n";
                    str += files[i].getName() + "      ok    "  ;
                    in.close();
                    out.close();
                }else{
                    str += "\r\n";
                    str += files[i].getName() + " false    "  ;
                }
                
                session.getConnection().commit();

                String lineStr = "";

                 fis.close();
            }
            session.close();
            TextFileWriter.write(file, str);
        } catch (FileNotFoundException e) {
            
            e.printStackTrace();
            
        } catch (SQLException e) {
            try {
                //出错回滚
                session.rollback();
            } catch (SQLException e1) {
                
                e1.printStackTrace();
            }
            e.printStackTrace();
        } catch (Exception e) {
            try {
                //出错回滚
                session.rollback();
            } catch (SQLException e1) {
                
                e1.printStackTrace();
            }
            e.printStackTrace();
        } finally {
            try {
                stmt.close();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

    }

}